"Semantic UI" matching MCP servers:

MCP-native agent-to-agent messaging hub for AI swarms. Agents communicate via channels and DMs through MCP protocol — zero SDKs needed. Includes web UI, semantic search, analytics dashboard. Single Go binary, local-first.

Lets a human review what an AI agent is about to post to a chat tool (Slack first) before it is sent. Renders the draft, destination and warnings (@here/@channel, unresolved mentions, format issues) in a neutral local HTML preview; never sends anything.

Enables AI agents to prompt users for input directly within the chat UI using MCP's elicitation capabilities, allowing for interactive multi-turn conversations without leaving the conversation interface.

Turns team chat (Slack, Discord, MS Teams, Mattermost) into a living knowledge base - a typed knowledge graph plus auto-generated wiki - exposed to AI agents through a 28-tool MCP server with semantic search, expert finding, and decision tracing.

MCP server that sends mail over SMTP, gated behind an allowlist and a human confirmation

The Sendchamp MCP server gives AI coding agents read-only access to search and retrieve accurate Sendchamp API documentation, schemas, and integration guides. It currently covers SMS, OTP verification, authentication, wallet balance, and Africa-specific routing guidance.

MCP server for ntfy: publish notifications, read cached messages, manage users and topic access

Enables AI to send expressive stickers based on conversation context, with a built-in UI for managing stickers.

Enables MCP clients to read, search, organise, and manage IMAP mailbox messages, including saving attachments and drafting replies, while treating mail content as untrusted and keeping write capabilities opt-in.

MCP server that wraps Meta's Messenger Platform, Instagram Messaging, and comment moderation APIs as semantic tools for LLM agents to read inbox, reply, and moderate comments.

Enables LLM agents to operate WhatsApp through the Evolution API, providing tools to list groups, fetch message history, and send text messages to groups or individual phone numbers.

MCP server that interacts with the Phone Link Windows app via UI Automation to read messages, calls, notifications, and photos, and perform actions like sending SMS and making calls.

MCP server to interact with Grupr agents, enabling polling new messages, posting replies, and managing event webhooks.

Lets any MCP client drive the recruiting workflow in natural language: create roles, screen CVs, schedule and manage candidate interviews, and read back scored reports with transcripts.

Enables AI agents to participate in meetings by pulling pending requests, reading context, and submitting answers through a Supabase-based MCP server.

Enables AI agents to interact with the ClawdChat social network, allowing them to post, comment, vote, follow other agents, manage communities, and send direct messages.

Enables Claude and any other MCP client to place and control voice calls, run conferences, stream call audio to AI agents, build IVRs, read call records and recordings, manage phone numbers, SIP trunks, applications, sub-accounts and billing, and send SMS/MMS/RCS on a Vobiz account. Calling, messaging and account changes stay off until explicitly enabled, with every write confirmed, rate-limited and idempotent.

Gives Claude access to your Skool community, enabling reading and writing posts, comments, members, classroom content, and DMs using your own login.

A standalone MCP server (also usable as a Node library) that lets an AI host browse its QQ favorite-sticker knowledge base, search web meme libraries by emotion keywords, preview images before use, record what each sticker means, and send a single sticker into whitelisted QQ groups or private chats. It enforces whitelists, per-session cooldowns and hourly caps, human-like send pauses, SSRF-safe image downloading, and prompt-injection-resistant sticker notes.

Enables AI assistants to access Fathom meeting recordings, summaries, transcripts, teams, and webhooks through the Model Context Protocol.